“PREPARATION OF A JAM BASED ON BEET (Beta Vulgaris) AND CHERRY (Prunus Avium) FREE OF CHEMICAL PRESERVATIVES, UNDER LABORATORY CONDITIONS”. 2024. Journal of Science and Research: Revista Ciencia E Investigación 9 (CININGEC-). https://revistas.utb.edu.ec/index.php/sr/article/view/3386.